Wenger remains upset over the sending off of Wojciech Szczesny in the first-leg.
"We had a good chance to win the game. I believe that in the second half the opportunities were there but overall over the two games I feel the major decision was the one to send our keeper off.
"Good luck to Bayern because they are a good side but this season they were more vulnerable. We have regrets. In the last five years we have twice played Barcelona, twice Bayern and they are at the top of their game every time.
"Every time in the last two years at home we have been very harshly done by. Away from home we have not lost for a long time in Germany but at home we have been caught."